Milking-machine.



PATENTED FEB. 20, 1906.

F. LJUNGSTRGM. MILKING MACHINE. APPLICATION FILED 110v. 1

nrrrrnn stages and rrno FEEDBlK LJUNGSTRQM, OF STOCKHOLM', SWEDEN,ASSlGNOR TO AKTIEBOLAGET SEPARATOR, OF STOCKHOLlSl, SWEDEN.

ninmaeenosmn.

Specification of Letters Patent.

Patented Feb. 20. 1906.

' Application filed November 11, 1905. Serial No. 286,897,

, Machines, and I do hereby declare the followair-mixed liquid ing to bea full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in milkinganachines and is adaptedfor use in a machine of the'type set forth in the United States LettersPatent No. 784,693, granted to me March 14*, 1905. 'In that patent isshown a milking-machine consisting of a set f pistons moving incylinders and acting successively upon the teats, thereby pressing themagainst. a fixed resisting body or abutment, whereby the milk isextracted. The pistons are moved by means of the streaming energy of abody of liquid contained in a conduit communicating with the cylindersof the milking organ and brought in a streaming motion to and fro bymeans of a pump or the like in such a way that the liquid is alternatelyforced into the cylinders and sucked out from them.

If in milking-machines oi the type specifled the conduit connecting thepum with the milking device be of any considerable length it becomesnecessary to provide'mea'ns for separating the air from the liquid, forthe i will act as a resilient body, thereby causing a loss of energy.Said loss of energy may be so great that only a small amount of theenergy developed on the pump will act upon the pistons.

My present invention consists, broadly,

therein that the liquid on moving to and froin the conduit is caused topass through a 'se arating vessel coupled to said conduit, w ere itisbrought to rotate or to eddy, whereby the lighter constituent (theair) amasses at the center of the vessel, while the heavier constituent(the liquid) on account of the centrifugal force is pressed against thewalls of the vesseland is further reconducted into the-conduit.

In the accompanying drawings, Figure l is a longitudin 1 verticalsection of a device constructed in accordance withnny invention; Fig. 2,a horizontal cross-section taken on line 2 2, Fig. 1; F a longitudinalvertical sec tion of a modified form of my device; and Fig. 4, ahorizontal cross-section taken on line 4 4, Fig. 3.

Referring to Figs. 1 and 2, (1 indicates a vessel adapted to be coupledto two sections of a liquid-conduit, (not shown) said vessel having alower cylindrical portion. and an upper conical portion. Liquid flowsinto the lower cylindrical portion of the vessel through a tube b, whichenters the vessel tangentially, whereby the liquid is given acentrifugal movement. If the centrifugal force of the liquid issufiicient, a separating process will take 'place, the heavierconstituents (the liquid) will be thrown. out toward the periphery ofthe vessel, and when the liquid has reached a certain height it willescape through a tube a, mounted axially in the vessel, while thelighter constituent (the air) amasses at the center in the conicalportion of the vessel 0. The air is conveyed from the vessel by means ofpipes d and e, which latter commui'iicates with the atmosphere throughthe apex of the conical portion.

the vessel and is open at the bottom, through which it communicates withthe pipe (Z,which surrounds it. The pipe (I is closed at its bottom andextends up and opens into the top part of the conical portion of thevessel a. For the purpose oi. preventing water from escaping throughthese pipes they have such. relative dimensions that only a small spaceis left between them and a great resistance is ofiered against theescape oi liquid way. For preventing air from being sucked into thevessel (L through pipes e and (Z the pi e 6 may be provided. with asinglo way va ve of the Dunlop type, which consists oi? a rubber tube 9,shutting a portf in said pipe 0.

T he pipe 0 extends through said apex and down through the bottom ofthis the pipe. A further resistance for preventing water from escapingthrough the pipe e may also be etlectedby bending the pipe several timesor by inserting partition walls therein or the like. This pipe, like thepipe c, is provided with a single-way valve 9, covering a port-f for thepurpose ofpreventing air from being sucked into the vessel. The

teed-tube 7), as well as the delivery-tube 0,

open tz'mgentially into the vessel, the tube 1) being above the tube c.A partitiondvall 71,

having a central opening lz ,divides the lower cylindrical part of thevessel into two chambers. This construction works in the same waywhether the liquid flows in one direction or tl'ieother.

1. In a device of the character specified, the combination with afeed-tube and a del iver v--tube. of a vessel interposed between saidtubes and adapted to impart a centrifugal movement to liquid suppliedthereto, and means to vent from the. vessel air separated from theliquid therein by the centrifugal movement thereof.

2. In a device of the characterspecified, the combination with afeed-tube and a delivery-tube, of a vessel interposed between said tubesadapted to impart a centrifugal movement to liquid supplied thereto, anda conduit in said vessel to convey therefrom the air separated from theliquid by the centrifugal movement of the latter.

In a device of the character specified, the combination with afeed-tubeand a delivery-tube. of a vessel interposed between said tubesand adapted to im )art a centrifugal movement to liquid suppiiedthereto, an air-chamber in the vessel above said tubes, and a conduit toestablish conn nunieation between the chamber and atmosphere.

4. In a" device of the character specified, the combination with afeed-tube and a delivery-tube, of a vessel interposed between the tubesand adapted to impart a centrifugal movement to liquid supplied thereto,a tube in the vessel to convey air from the latter, and a valve on saidtube operable by the air therein. I v

5. In a device of thecharacter specified, the combination with afeed-tube and a delivery-tube, of a vessel interposed between the tubesand adapted to impart a centrifugal movement to liquid supplied thereto,an air-chamber in the vessel, an air-conduitleading from near the top ofthe chamber down into the vessel and communicating with the I Iconduitop' atmosphere, and a valve on the erable by the air therein. I

6. YA device of the character specified comprising a vessel having anair-chamber in its a tube opening tangentially into the vessel a tubeaxially mounted in the latter, a .conduit within the latter tubeextending through the top of the vessel and a conduit closed at one endopening into the air-chamher and surrounding the aforesaid conduit.

' 7. A device of the character specified comprising a cylindrical vesselhaving a conical chamber mounted thereon, a tube opening tangentiallyinto the vessel, va tube axially mounted in the latter, a tube mountedconcentricallywithin the latter tube extending out through the conicalchamber, a valve on the outer end of said tube, a tube inclosing thelatter tube closed at its bottom ai'id exetending to near the top of theconical cham-' her, for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed myname and in presence of two subscribing witnesses.

FREDRIK LJUNGS'IROM.

Witnesses CARL FRIBERG, HARRY ALBIHN

